This patch selects `X86_CLFLUSH_CAR` config for running `clflush`
to invalidate the cache region based on commit 3134a81 for boot
performance improvement.
Signed-off-by: Lean Sheng Tan <sheng.tan@9elements.com>
Change-Id: Icd3d16ab2cb34dc81fc12ec139c52ecaa170528d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73686
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>